Boyfriends roommate

So i don’t live with my boyfriend but he lives with his roommate who is like my best friend it i don’t consider him my best friend anymore. I just feel like ever since he moved in with him which is 2 years now he doesn’t pay attention to me that often like i get it they have their bro time and they live together but sometimes when i want to spend time with him he can’t because he’s with his roommate it’s like he’s at his beck and call but when i want something i have to ask and keep asking. It’s just the effort and it’s frustrating me to the point where i don’t even want to go over because i can’t have him to myself, it’s like if i have to take turns seeing him.

Has anyone ever experienced this? Or have any advice?